Electric radiator



Jan. 11 1927. 1,614,308

J- F. LAMB ELECTRIC RADIATOR Filed June 6, 1919 2 Shasta-Sheet 1 I NVENTOR.

Joseph F L amb- A TTORNE Y.

Jan. 11, 1927.

J. F. LAMB ELECTRIC RADIATOR Filed June 6, 1919 2 Shuts-Sheet 2 INVENTOR. Joseph Flamb- ATTORNEY. I

Patented Jan. 11, 1927.

UNITED STATES PATENT OFFICE.

JOSEPH F. LAMB, OF NEW BRITAIN, CONNECTICUT, ASSIGNOR TO LANDERS, FRARY & CLARK, OF NEW BRITAIN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

ELECTRIC RADIATOR.

Application filed June 6, 1919.

The present invention relates to a heater for warming air and the invention has as its object to produce a device of the character described having tteatures of novelty and advantage.

In the drawin s Fig. 1 is a trout view of the complete heater.

Fig. 2 section.

Fig, 3 is an enlarged sectional view taken longitudinally through the heating unit.

l ig. l is a sectional view of the heating unit taken on a plane at right angles to the plane of Fi 3.

Fig. shows enlarged detail views, partly in section of portions of the guard.

Fig. 6 is an enlarged view showing the means tor attaching the guard to the reflcctor, and

Fig. 7 is a top plan view of two complete devices placed in overlapping po ition, a portion ot one of the devices being broken a w av.

Referring to the drawings: if), is a base; ll, a standard rising there from; 12, a yoke secured to the standard; 12- a reflector pivotally mounted in the upper ends of the yoke l2; l-fl, the heating unit in the re- Hector; and l is the guarr.

The base ll) is preferably triangular in shape so as to permit nesting of a plurality of radiators in a relatively small compass tor shipping and storing purposes. llv having one point of the base at the front of the radiator, the radiator is prevented i'rom falling forwardly and setting fire to the surface on which it rests in the event it should he accidentally knocked over.

In the present instance, the. reflector 13, having a concave reflecting suiiace is formed of? sheet metal and adjacent its front edge receives the edge of the guard 15.

In the present disclosure of my invention, l have shown the heating unit 14 as having an insulating support 17 tapering down from a portion near its base towards its tip or outer end and having a spiral groove in which positioned a resistor 18 con'iprising a coiled wire. Preferably, the rear end'of the support 17 is also tapered down as at 16 and this tapering portion receives one or more convolutions ot the resistor 18. The

is a side view in central vertical convolution or convolutions of the resistor upon the tapering portion 10 \Ylll radiate Serial No. 302,177.

light rays onto that portion of the reflecting surface about the base 19 and thus a dark spot which would otherwise be present at the base of the reflecting surface is eliminated. 1n placing the resistor in the groove of the insulating support 17, the resistor is preferably placed under tension so that the convolutions of the resistor will closely hug the insulating body. lVith the constrrmtion of the heating unit illustrated, a relatively long length of resistor is located with in a small compass and the coils of the resistor are securely maintainer against movement so that adjacent convolutions cannot come into contact with each other and result in short circuiting. Preferably, the longitudinal center ot the resistor 18 is substantially coincident with the axis of the reflecting surface and the diameters ot the convolutitms of the resistor increase from the forward 9nd of the unit to the portion ol greatest diameter adjacent the rear end thereof so that when the heater is viewed 'from a position directly in trout thereof substantially the entire length of? the resistor which when heated gives out a red glow, may be obs'erved resulting in a pleasing ocular eli'cct. lt will be seen trorn the drawings that the resistor is of gr ater dian'ieter than the depth of the groove receiving the same so that the coin volutions protrude ontwardl5 beyond the snri ace ot the support ii".

The heating unit 14: has a base member vl!) providml at its forward end with lugs 22 which fit in notches or recesses in the resistor support 1? to prevent the latter from turning. As most clearly shown in Fig. It the base i'nember has a circunrterential rib or flange the forward taco of which engages about the edge of the opening in the reflector in which the base member is positioned. The base member 19 is held in place by a metal terrule or shell QI'preiterably tormed of sheet metal and pressed into shape to provide a socket for receiving the rear end of the base member and a flange curved similarly to the reflector so as to engage thereagainst. the flange being fastened to the reflector by any suitable securing means such as bolts and nuts 23. It desired a spring washer 2st may be interposed between the shell ill and the base member to prevent rattling of the latter. Carried by the base member are terminal posts which receive the connection plug (not shown) on the end of ill) the cord connected to the circuit wires. These posts have their forward ends threaded so as to be received by internally threaded bush- 'igs 26 located in enlarged counterbores of openings 26 and secured in position therein by bolts 27 passing through the openings 26. For the purpose of securing the resistor support 17 to the base 19. there is provided a bolt 28 extending centrally through the insulator and into a centrally disposed opening 28 in the base, and a nut 29 within a counterbore of this opening 28. The rear end of the resistor 18 is connected by a terminal wire 18 to one of the posts and the forward end of the resistor is connected to the other terminal post by a terminal wire 18" passing through the support 17.

The guard 15 convex so as to extend away from the plane ol the front face of the reflector and thus prevent wearing apparel or the like from coming into such proximity with the heating unit as to be ignited. lh'eil'erably. the guard is removable and its convexity corresponds to the concavity ot the reflector so that it may be reversed and in its rever ed position nest within the rellect'or. as most clearly shown in Fig. T. for shipping and storage purposes.

The guard pre't'erably consists ot an outer ring 3t) of such size as to tit within the edge ot the rel'lector when it. is sprung into position therein; a central ring ill of such size as to receive the heating unit when the guard is reversed amt nested in the rel'lector. and guard wires :32 between the two rings. The guard wires are preterably formed in pairs, each pair being made by bendinga wire back upon itsel'l' into hairpin s ape. the advantage of this construction being that the wire: will be securely held in place against twisting movement about the points where they are connected to the rings. The inner ring has a number of spaced lingers 3:3, alternate lingers being passed through and bent around the closed ends of the hair pin members and intervening lingers being positioned between the guard wires ot adjacent hairpin members. The outer ends of the guard wires are passed through openlogs in the outer ring and then bent over to lie close against the ring as clearly shown in Fig. 2.

The means tor removably securing the guard in place may, of course. be varied. but by preference these means con'iprise lugs 3% carried by the ring 30 and received by slots in the reflector. Each of the lugs is notched as at 36 so as to receiv an edge of a slot Prete ably the lugs are disposed at diametrically opposite points on the ring 30 and the notch 36 in one of the lugs i at the lower edge thereof and the notch in the other lug is at its upper edge thereof so that the notches receive the edges of the slots 86 upon a slight rotary movement of the guard in the direction ot the notches. For the purpose of securely holding the guard against accidental displacement upon the reflector, the diametrical distance between the lugs when the guard is not in place upon the reflector is slightly greater, as shown by dotted lines Fig. 1, than the diametrical distance between the slots 3.3, thus necessitating a slight compression of the guard to permit insertion of the lug: into the slots 35 and then when the force of compression is removed. the guard will tend to spring outwardly causing the lugs to 'lrictionally engage against the walls of the slots 35.

It will be seen from the drawings and particularly from Fig 1 and that the cen trally disposed opening of the guard. this opening being provided in the present iiistance by the ring 331, is in axial alinement with the heating unit and as the surtace ot the support 17 'on which the resistor is mounted tapers downwardly towards its outer or tor-ward end. the entire length ot the resistor may be viewed through the opening. .Iturthermore. the opening in the inner ring 31 is adapted to receive the heating unit to permit nesting o'l the guard in the reflector.

The manner in which radiators constructed in accordance with the present invention may be overlapped or nested to secure, compactness tor the purpose of shipment is clearly shown in Fig. 7 wherein the guard 15 are nested in the tcl'lcctors. aml the rcllectors are opporcd to each with bases to in contact.

It is o'l course, obvious that my invention is susceptible ot various modifications and change which are within the spirit ot tllo invention without departing from the scope of the 'lt'ilh'iwing claims. it; being understood that the present disclosure ot my invention is by way of illustration only and it is not to be taken as restrictive ot my conception.

I claim as-my invention 1. ln an electrical heater, a retlector having a concave reflecting surface. a heating unit arranged axially thereof a convex guard romovably secured to the marginal edge of said reflector and having a centrally located opening in alinement with aid heating unit. said guard being nestable within said reflector. and a support for said reflector having a triangular base with one of its apices extending l'orwardly 0'! said re flector.

9. In an electrical heater. a reflector. a resistor support. a resistor on said upport a base member secured to said reflector. interlocking lugs and recesses between said support and ba e member. and means for securing said support and base member in assembled position.

JOSEPH F. Infill). 

